John Milbank on gay marriage

During the course of recent debates in the British Parliament over the proposed legalisation of gay marriage, it has gradually become apparent that the proposal itself is impossible. For legislators have recognised that it would be intolerable to define gay marriage in terms equivalent to “consummation,” or to permit “adultery” as legitimate ground for gay divorce.

Thus, despite the telling squeamishness in much contemporary conversation on homosexuality, which invariably steers away from its physical aspects, the legislators have been forced tacitly to admit the different nature of both gay sexuality and of gay sociality. But such an admission destroys the assumption behind the legislation and the coherence of what the legislation proposes to enact.

http://www.abc.net.au/religion/articles/2013/04/23/3743531.htm